3915139 has 2 divisors, whose sum is σ = 3915140. Its totient is φ = 3915138.

The previous prime is 3915127. The next prime is 3915143. The reversal of 3915139 is 9315193.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3915139 - 2²¹ = 1817987 is a prime.

It is a Chen prime.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 3915139.

It is not a weakly prime, because it can be changed into another prime (3915169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1957569 + 1957570.

It is an arithmetic number, because the mean of its divisors is an integer number (1957570).

Almost surely, 2^3915139 is an apocalyptic number.

3915139 is a deficient number, since it is larger than the sum of its proper divisors (1).

3915139 is an equidigital number, since it uses as much as digits as its factorization.

3915139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3645, while the sum is 31.

The square root of 3915139 is about 1978.6710186385. The cubic root of 3915139 is about 157.6095014112.

The spelling of 3915139 in words is "three million, nine hundred fifteen thousand, one hundred thirty-nine".